用Hardhat开发智能合约，并发布ERC20 Token

npm install --save-dev hardhat

npx hardhat

npm install @openzeppelin/contracts

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

contract DrawToken is ERC20, Ownable {
    constructor() ERC20("DrawToken", "DTK") {}

    function mint(address to, uint256 amount) public onlyOwner {
        _mint(to, amount);
    }
}

import { ethers } from "hardhat";

async function main() {
  // DrawToken
  const DrawToken = await ethers.getContractFactory("DrawToken");
  const drawToken = await DrawToken.deploy();
  await drawToken.deployed();
  console.log(`drawToken deployed to ${drawToken.address}`);
}

// We recommend this pattern to be able to use async/await everywhere
// and properly handle errors.
main().catch((error) => {
  console.error(error);
  process.exitCode = 1;
});

npx hardhat node

npx hardhat run --network localhost scripts/deploy.ts

drawToken deployed to 0x5FbDB2315678afecb367f032d93F642f64180aa3

# node
Welcome to Node.js v16.15.1.
Type ".help" for more information.
> const { ethers } = require("ethers");
undefined
> const provider = new ethers.providers.JsonRpcProvider();
undefined
> account1 = new ethers.Wallet('0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80',provider)
Wallet {
  _isSigner: true,
  _signingKey: [Function (anonymous)],
  _mnemonic: [Function (anonymous)],
  address: '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266',
  provider: JsonRpcProvider {
    _isProvider: true,
    _events: [],
    _emitted: { block: -2 },
    disableCcipRead: false,
    formatter: Formatter { formats: [Object] },
    anyNetwork: false,
    _networkPromise: Promise {
      [Object],
      [Symbol(async_id_symbol)]: 47,
      [Symbol(trigger_async_id_symbol)]: 5,
      [Symbol(destroyed)]: [Object]
    },
    _maxInternalBlockNumber: -1024,
    _lastBlockNumber: -2,
    _maxFilterBlockRange: 10,
    _pollingInterval: 4000,
    _fastQueryDate: 0,
    connection: { url: 'http://localhost:8545' },
    _nextId: 43,
    _eventLoopCache: { detectNetwork: null, eth_chainId: null },
    _network: { chainId: 31337, name: 'unknown' }
  }
}

> abi = [{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]
...
> contract = new ethers.Contract('0x5FbDB2315678afecb367f032d93F642f64180aa3',abi,account1)
...

> await contract.name()
'DrawToken'
> await contract.symbol()
'DTK'

> contractWithSigner = contract.connect(account1)
...
> contractWithSigner.mint(await account1.getAddress(),100)
{
  type: 2,
  chainId: 31337,
  nonce: 2,
  maxPriorityFeePerGas: BigNumber { _hex: '0x59682f00', _isBigNumber: true },
  maxFeePerGas: BigNumber { _hex: '0xb5f20e1e', _isBigNumber: true },
  gasPrice: null,
  gasLimit: BigNumber { _hex: '0x0116e2', _isBigNumber: true },
  to: '0x5FbDB2315678afecb367f032d93F642f64180aa3',
  value: BigNumber { _hex: '0x00', _isBigNumber: true },
  data: '0x40c10f19000000000000000000000000f39fd6e51aad88f6f4ce6ab8827279cfffb922660000000000000000000000000000000000000000000000000000000000000064',
  accessList: [],
  hash: '0x3e0a661dc1656fc7d3be8033f2f6fd4ceec8b05ac328c37fb1769d813a1c8524',
  v: 1,
  r: '0xff8f32375fcc5fb3d31634a5b604c8bc4d975b1b694611a4323609d990f944b0',
  s: '0x14a5b08e8afd9686c1c89962f490a82836dd8aa95cd6c9adcb611596cbc46c91',
  from: '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266',
  confirmations: 0,
  wait: [Function (anonymous)]
}

> balance = await contractWithSigner.balanceOf(await account1.getAddress())
BigNumber { _hex: '0x64', _isBigNumber: true }
> balance.toString()
'100'

> account2 = new ethers.Wallet('0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d',provider)
...
> contractWithSigner.transfer(await account2.getAddress(), 50)
{
  type: 2,
  chainId: 31337,
  nonce: 3,
  maxPriorityFeePerGas: BigNumber { _hex: '0x59682f00', _isBigNumber: true },
  maxFeePerGas: BigNumber { _hex: '0xac5e7c24', _isBigNumber: true },
  gasPrice: null,
  gasLimit: BigNumber { _hex: '0xcc41', _isBigNumber: true },
  to: '0x5FbDB2315678afecb367f032d93F642f64180aa3',
  value: BigNumber { _hex: '0x00', _isBigNumber: true },
  data: '0xa9059cbb00000000000000000000000070997970c51812dc3a010c7d01b50e0d17dc79c80000000000000000000000000000000000000000000000000000000000000032',
  accessList: [],
  hash: '0xe0d69fe8dbffbb507090d6bc62c4f9127d88b9f747c466fd5a8df8cd5e60690c',
  v: 0,
  r: '0xed8ebd334cf1996a9e3021866aca03c50bf98ffbbbd4dccb15352baabc0c0b02',
  s: '0x706acb4a6f768c095d3ac56f51dd2c4502da8236f52c39137891250ddab5de8c',
  from: '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266',
  confirmations: 0,
  wait: [Function (anonymous)]
}

> (await contractWithSigner.balanceOf(await account2.getAddress())).toString()
'50'
> (await contractWithSigner.balanceOf(await account1.getAddress())).toString()
'50'